Meehanite,HE Heat Resisting Cast Iron Sheet,Plate

Meehanite HE Heat Resisting Cast Iron Sheet/Plate Product Information -:- For detailed product information, please contact sales. -: Meehanite HE Heat Resisting Cast Iron Sheet/Plate Synonyms -:- For detailed product information, please contact sales. -:

Meehanite HE Heat Resisting Cast Iron Product Information -:- For detailed product information, please contact sales. -: ## **Meehanite HE Series: High-Performance Heat & Corrosion Resisting Cast Iron** ### **1. Product Overview** Meehanite HE (Heat and Environment resistant) represents a premium category of austenitic cast iron specifically engineered to deliver exceptional performance in demanding environments involving **elevated temperatures, corrosive media, and cyclic thermal stresses**. Unlike ferritic or pearlitic grades, HE irons possess a stable **austenitic matrix structure** that provides outstanding dimensional stability, corrosion resistance, and maintained mechanical properties at extreme temperatures far beyond standard heat-resistant irons. These alloys combine **high nickel and chromium content** with carefully balanced alloying elements to create materials suitable for the most aggressive industrial applications where conventional irons would rapidly degrade. The Meehanite production process ensures consistent microstructure and reliable performance in critical applications. --- ### **2. Chemical Composition (Typical Ranges)** Meehanite HE encompasses several specific alloy formulations, with two primary families: #### **HE-1/Ni-Resist Type (Standard Austenitic)** - **Carbon (C):** 2.8-3.2% - **Silicon (Si):** 1.5-2.5% - **Nickel (Ni):** 13.5-17.5% (Primary austenite stabilizer) - **Chromium (Cr):** 1.5-2.5% (Enhances scaling resistance) - **Manganese (Mn):** 0.5-1.5% - **Copper (Cu):** 5.0-7.0% (Optional in some grades for enhanced corrosion resistance) #### **HE-2/High-Chromium Austenitic (Superior Heat Resistance)** - **Carbon (C):** 2.6-3.0% - **Silicon (Si):** 1.5-2.0% - **Nickel (Ni):** 18.0-22.0% - **Chromium (Cr):** 2.5-3.5% - **Manganese (Mn):** 0.5-1.5% - **Special Additions:** May include niobium (Nb) or molybdenum (Mo) for carbide stabilization **Microstructural Characteristic:** Consistent austenitic matrix with either flake graphite (Type A) or spheroidal graphite structure, depending on grade and application requirements. The austenitic structure remains stable from cryogenic temperatures up to the critical service limit. --- ### **3. Physical & Mechanical Properties** #### **Room Temperature Properties:** - **Tensile Strength:** 170-450 MPa (varies with graphite morphology) - **Yield Strength (0.2%):** 140-350 MPa - **Elongation:** 3-25% (spheroidal graphite grades offer higher ductility) - **Hardness:** 150-250 HB - **Impact Resistance:** Good to excellent (retains toughness at low temperatures) - **Thermal Expansion:** High (~18×10⁻⁶/°C) – requires design consideration - **Thermal Conductivity:** Low (approximately 12-15 W/m·K) – provides natural insulation #### **Elevated Temperature Performance:** - **Maximum Continuous Service:** **800-950°C (1472-1742°F)** depending on grade - **Short-Term Exposure:** Up to **1050°C (1922°F)** for select grades - **Exceptional Scaling Resistance:** Superior to most steels up to 1100°C due to protective Cr₂O₃/SiO₂ oxide layers - **Creep Strength:** Good to excellent at temperatures up to 900°C - **Thermal Fatigue Resistance:** Outstanding resistance to crack initiation and propagation during thermal cycling - **Growth Resistance:** Minimal permanent dimensional change even after prolonged high-temperature exposure #### **Corrosion Resistance:** - Excellent resistance to oxidizing acids, alkaline solutions, and saltwater corrosion - Good resistance to reducing acids and pitting corrosion - Superior performance in sulfidizing, carburizing, and nitriding atmospheres --- ### **4. Product Applications** Meehanite HE grades serve in extreme environments across multiple industries: #### **High-Temperature Processing:** - **Glass Manufacturing:** Moulds, plungers, gob distributors, forming tools (especially for borosilicate glass) - **Heat Treatment:** Carburizing boxes, retorts, furnace rolls, radiant tubes, fixtures - **Petrochemical:** Reformer furnace components, pyrolysis tubes, burner nozzles - **Cement & Lime:** Kiln inlet segments, cooler grates, burner pipes #### **Corrosion-Intensive Applications:** - **Chemical Processing:** Pumps, valves, impellers, agitators for corrosive media - **Marine & Offshore:** Seawater pump components, valve bodies, fittings - **Pollution Control:** Scrubber components, flue gas desulfurization parts #### **Dual Challenge Environments:** - **Waste Incineration:** Grate bars, ash conveyors, heat exchanger parts - **Power Generation:** Boiler baffles, sootblower elements, ash handling components - **Automotive:** Exhaust system components for high-performance/turbocharged engines --- ### **5. International & Relevant Standards** Meehanite HE grades correspond directly to established international standards for austenitic cast irons: #### **Primary Standards:** - **ASTM A436/A436M-18:** *Standard Specification for Austenitic Gray Iron Castings* - **Type 1/1b:** Standard Ni-Resist (13.5-17.5% Ni, 1.0-2.5% Cr) - **Type 2:** Higher nickel variant (18-22% Ni) - **ASTM A439/A439M-18:** *Standard Specification for Austenitic Ductile Iron Castings* - **D-2/D-2B:** Austenitic ductile iron (18-22% Ni, 1.5-2.5% Cr) - **D-3:** Higher chromium variant for improved heat resistance #### **European/ISO Standards:** - **EN 13835:2012:** *Founding — Austenitic cast irons* - **EN-GJLA-XNiCuCr15-6-2** (Standard austenitic with flake graphite) - **EN-GJSA-XNiCr20-2** (Austenitic with spheroidal graphite) - **ISO 2892:2007:** *Austenitic cast irons — Classification* #### **Additional References:** - **SAE J434:** Automotive standard for austenitic ductile iron - **BS 3468:** British Standard for austenitic cast iron - **DIN 1694:** German standard covering austenitic cast materials #### **Grade Cross-Reference:** - **Meehanite HE-1:** Typically corresponds to ASTM A436 Type 1b / EN-GJLA-XNiCuCr15-6-2 - **Meehanite HE-2:** Typically corresponds to ASTM A439 D-2 / EN-GJSA-XNiCr20-2 - **Special Grades:** Available to meet specific customer requirements beyond standard specifications --- ### **6. Advantages & Selection Considerations** **Key Advantages:** 1. **Temperature Capability:** Unmatched high-temperature performance among cast irons 2. **Corrosion Versatility:** Resists both oxidizing and reducing environments 3. **Thermal Stability:** Maintains properties through thousands of thermal cycles 4. **Machinability:** Good machinability despite high alloy content 5. **Castability:** Can be cast into complex shapes with reasonable foundry yields **Design Considerations:** - High thermal expansion requires careful allowance in assembly design - Lower thermal conductivity than ferritic irons – consider heat transfer requirements - Premium material cost justified by extended service life in aggressive environments - Material selection should be based on specific temperature, atmosphere, and mechanical stress conditions --- **Conclusion:** Meehanite HE austenitic cast irons provide engineered solutions for applications where conventional materials fail due to extreme temperatures, corrosive environments, or the combination of both. With documented performance to international standards and the quality assurance of the Meehanite process, these materials offer reliable, cost-effective performance in the world's most demanding industrial applications. For specific application engineering, consultation with a licensed Meehanite foundry is recommended to select the optimal HE grade and heat treatment protocol. -:- For detailed product information, please contact sales. -: Meehanite HE Heat Resisting Cast Iron Specification Dimensions Size： Diameter 20-1000 mm Length <6634 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Meehanite HE Heat Resisting Cast Iron Properties -:- For detailed product information, please contact sales. -:

Applications of Meehanite HE Heat Resisting Cast Iron Sheet,Plate -:- For detailed product information, please contact sales. -: Chemical Identifiers Meehanite HE Heat Resisting Cast Iron Sheet,Plate -:- For detailed product information, please contact sales. -:

Packing of Meehanite HE Heat Resisting Cast Iron Sheet/Plate -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Sheet/Plate drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3105 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition